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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

Sodium sulfate is not a substance of concern for algae. The reference test data are comparable to that of data for OECD approved algae species. The response of the tested diatom species is therefore likely to be similar to approved test species. The data may therefore be used with care. The EC50 for Nitzschia linearis is 1900 mg/L.

Key value for chemical safety assessment

EC50 for freshwater algae:
1 900 mg/L

Additional information

No valid studies with algae were found. Patrick et al. (1968) performed a 120-hour growth test with Nitzschia linearis. The test duration of 120 hours and the tested species N. linearis is a different than recommended in the guideline. The reference test data are comparable to that of data for OECD approved algae species. The response of the tested diatom species is therefore likely to be similar to approved test species. Due to the very low toxicity of sodium sulfate in all ecotoxicological endpoints this study described by Patrick et al., can be used with care.

An EC50value of 1900 mg/L was calculated.

This result shows that Sodium sulfate is not a substance of concern for algae.